Improvement in rolling-mills



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JOSEPH L. CHAPMAN, 0F PHILADELPHIA, PENNSYLVANIA.-

Letters Patent No. 81,600, dated September 1, 1868;

IMPROVEMENT IN ROLLING-MILLS.

TQ ALL WHOM IT MAY CONCERN:

Be it known that I, JOSEPH L. CHAPMAN, of the city and county ofPhiladelphia, and State of Pennsyluvania, have invented a new and usefulImprovement in Round-Bar-Rolling Mills; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawings, and to the letters of reference markedthereon. i A The nature oi my invention mainly consists in thecombination and arrangement of three rollers in relation to each other,in such a manner as to form a space between them at one end ofsuflicientsize to receive the largest pile to be pressed into a rod, and of theproper distance apart, so that whenl the said -pile shall be deliveredthrough the space between the rollers at their other ends', by therevolution of the same, it shall be compressed into the requisite sizefor the rod. It also consists in'placing the rollers on a twist orslight angle with each other, so as to causethe pile to advance to thedelivery-end as the rollers revolve. It further consists in making therollers larger at their receiving than at their delivery-end, so as tomake the relative velocity of their periphery at each end coincide withthe relativet velocity of the pile and the rod,

to prevent giving twist to the latter. y

It further consists in combining the rollers at their receiving-end bymeans of ball-and-socket joint with the honsen, and making themadjustable at their other end by set-"screws, or other mechanicalequivalent, for the purpose of adjusting them at their delivery-end, toforxnrods of various sizes.

In the accompanying drawings, which form a part of this specification-Figure 1 isa plan or top view of the mill.

Figure 2 is a sido elevation of the same.

Figure 3 is an end elevationl of the receiving-end of the mill.

vFigure 4 is a like view of the delivery-end ofv the same.

Figure 5 is a face view of one of the rollers' C' and box b.

Like letters in all the figures indicate the same parts. Y l

A is the bed-plate of the mill; B and B'. are the housens; C, C,and Care rollers, which are connected with the honsen B by means ofhall-andfsocket joints. The housen B has a cap-piece, D,'coniinedthereto by screw-'bolts a. The joints in the housen and cap are seen intig. 1. VThe rollers are connected with the housen v B by means'of theirjournal-boxes b, b', and b. The box b is stationary,but b b areadjustable in the slots c! and c'th ere being adjusting-screw bolts E E,whichare tapped into the housen. There are bolts F F, whose eyes .LL-encircle the round part e of the boxes.4 The bolts pass' through thepernianeut'lugs ff of the housen, and have a nut on their ends, betweenwhich, and their respective lugs, there isa cylindrical spring, g,todraw the box against the setscrew bolts E E.

'lhe said rollers C, C', and C have pinions wGr on their receiving-end,which gear into the central wheel H, on the inner end of the hollowshaft I, through which the pile is passed to enter the space between therollers. The said shaft has its bearing in the houseu B. The teeth ofthe wheel H have a twist corresponding to the twistposition of therollers.

I make the rollers C, C', and C' larger at their receiving than attheirpdelivery-end, so that their velocity at oaclrendj will correspondwith the respective circumferences of the pile and the size of thefinished rod.

The small ends of the rollers should be rounded oi on the corner toprevent their cutting into or marking the rod. v

The set-screws E E are adj-usted to vary the size-'of the rods. I

It will readily be seen that rods of various sizes may he formed in thesame mill by adjusting the rollers, and that they are necessarily'madcof regular diameter at one operation. Heretoforethe rods wereformed bypassing the pile between cross-grooves of rollers,-and repeating theoperation'several times with lthe rods, to bring. thcxn to their propersize, and make them round. And after all, there has been found greatdiculty in makn,r the rods round. Y

J is a. pulley on the outer end of tho hollow shaft I, whichcommunientes, by means of a. belt, with the motive-power.

What I cla-'im as my invention, and desire* to secure by Letters Patent,is-

1. The arrangement of three smooth conical rollers, rotating indifferent planes, and opemtngl inthe manner described, to form and feedthe rod simu taneously, as above specified.

2. The adjustment of the rollers C C', to form rods of different sizes,by. means of bull-ond-sockct joints at one end, and set-screws andjournal-boxes at the other end, substantially in the manner shown andset forth.

In testimony that the above is my invention, I havehercunto set my hand,:md alxed my seal, this 29th day of June, 1868.

A JUS. L. CHAPMAN. [L 8.]

Witnesses STEPHEN USTICK, J. I. DELANEY.

